Grindstone



F. NELSON. GRINDSTONE. FILED DEC. 20, 1919.

Mar. 20, 1923.

Fatented Mar. 20, 1923.

y S 'l" A TBS IENAR r. NELSON, or secure, WISCONSIN.

enmnsronn.

Application fi1ed December 20,1919. Serial No. 346,259.

To all whom-1ft may concern:

Be it known that I, IENAR F. NnLsoN, a citizen of the United States, and resident of Racine, in the county of Racine and State of lVisconsin, have invented new and useful Improvements in Grindstones, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The present invention relates tocertain new and useful improvements in grind stones and has for one of its objects to provide a grind stone so arranged that the same may be nianually driven or coupled with any desired power driving mechanism.

Another object of this invention to pro vide a water trough for wetting the stone having one end pivotally secured to the support and its other end adjustably secured thereto so that the same may be lowered to bring the level of the water in the trough below the periphery of the grind stone when the stone is not in use;

I'Vith the above and other objects in view which will appear as the description prceeds, my invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the hereindiselosed invention may be made as come within the scope of the claims.

In the accompanying drawing I have illustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles thereof, and in which:

Figure 1 is a side view of a grind stone embodying the features of my invention, parts being broken away and in section to more clearly illustrate the details of construction.

Figure 2 is a view part in section and part in elevation taken on the plane indicated by the line 22 of Figure 1, and

Figure 3 is a view taken through Figure 1 on the line 33.

Referring now more particularly to the accompanying drawing, the numeral 5 dos-- ignates generally a grind stone support in eluding two spaced apart longitudinal frame members 6 and supporting legs 7 and 8 designates a grind stone rotatably supported on the support between the frame members 6. I

The grindstone 8 is mounted on a shaft 9 journalled in bearing members 10 secured to the frame members 6 and having one end thereof squared as at 11 for receiving a hand crank 12 when it 'is desired to manually turn the stone 8. As oftentimes it is desired to turn the grind stone by a farm engine or by jacking up an automobile wheel and con necting the same therewith I provide suitable gears to permit the driving of the stone by such power. Secured to one side of the stone 8 by means of fastenings 13 is an in ternal gear 14 and in mesh with the teeth of said internal gear is a drive gear pinion 15 fixed to the inner end of a drive shaft 16 journalled in a bearing 17 fixed to one of the frame members 6 adjacent the bearing 10 secured thereto. A pulley 17 is fixed to the outer end of the shaft 16 and is adapted to be connected with any desired source of power (not shown) by means of a belt connection or the like 18.

The gears 13 and 15 are protected and enclosed by a guard casing 19 completely enclosing the internal gear 14 and secured to a support as at 20. The shafts 9 and 16 extend through the openings in said casing and as will be obvious the casing is rigid with respect to the support and the gear 14 revolves therein. 7

The lower portion of the stone 8 is adapted to run in water or other suitable fluid 21 contained within a trough 22 carried by the support, and as the stone 8 deteriorates if allowed to stand in the water when not in use I provide means for adjustably securing the trough 22 to the support whereby the same may be lowered to bring the level of the water below the periphery of the stone.

The trough 22 has one end 23 pivotally secured as at 24'between the frame members 6 and has its other free end 25 provided with a handle or lever 26 projected through an elongated slot 27 formed in a depending member or arm 28 secured to the frame members 26 as at 29, the member 28 being providedwith a plurality of serrations or teeth 30 adapted to be engaged by the lever 26.

As depicted by dotted lines in Figure 1, the lever 26 may be moved to engage any one of the teeth 30 so that the trough 22 may be positioned to have the stone 8 run in the water 21 or else have the level of the water below the periphery of the stone when the stone is inoperative.

What I claim as my invention is:

1. An abrasive apparatus comprising a supporting frame; a shaft journalled on said frame; an abrasive wheel rigidly mounted on said shaft; an annular gear rigidly secured to one side of said wheel concentric therewith; a guard casing carried by said gear; a drive shaftjournalled 011 said frame eccentric and parallel to said first shaft, and passing through said guard casing; a pinion carried by said drive shaft, meshing with said annular gear; power means carried by said drive shaft for rotating the same; and manual means carried by said first shaft for independently rotating it.

2. An abrasive apparatus comprising a supporting frame; a shaft journalled on said frame; an abrasive wheel mounted on said shaft; manual means carried by said shaft for rotating said wheel and shaft; power means including reduction gearing for independently rotating said wheel; a water trough pivotally secured to said frame beneath and in operative relation to said Wheel; a depending arm rigidly carried by said frame, provided with an elongated opening having a serrated edge; and a ham dle carried by said trough passing through Said opening, and adapted to engage said serrations to position said trough relative to said wheel.

In testimony whereof, I affix my signature.

IENAR F. NELSON. 

